entrypoint: add --mirror-state option

The --mirror-state option specifies a path to a file in which the script
will record the state of (rbd) mirroring. This can then later be reused
in order to skip the somewhat time consuming mirroring setup if the
statefile indicates mirroring is already functional.

Signed-off-by: John Mulligan <jmulligan@redhat.com>

entrypoint.sh

@@ -11,13 +11,14 @@ MICRO_OSD_PATH="/micro-osd.sh"
 BUILD_TAGS=""
 RESULTS_DIR=/results
 CEPH_CONF=/tmp/ceph/ceph.conf
+MIRROR_STATE=/dev/null
 
 
 # Default env vars that are not currently changed by this script
 # but can be used to change the test behavior:
 # GO_CEPH_TEST_MDS_NAME
 
-CLI="$(getopt -o h --long test-run:,test-bench:,test-pkg:,pause,cpuprofile,memprofile,no-cover,micro-osd:,wait-for:,results:,ceph-conf:,mirror:,help -n "${0}" -- "$@")"
+CLI="$(getopt -o h --long test-run:,test-bench:,test-pkg:,pause,cpuprofile,memprofile,no-cover,micro-osd:,wait-for:,results:,ceph-conf:,mirror:,mirror-state:,help -n "${0}" -- "$@")"
 eval set -- "${CLI}"
 while true ; do
     case "${1}" in
@@ -65,6 +66,11 @@ while true ; do
             shift
             shift
         ;;
+        --mirror-state)
+            MIRROR_STATE="${2}"
+            shift
+            shift
+        ;;
         --cpuprofile)
             CPUPROFILE=yes
             shift
@@ -87,6 +93,7 @@ while true ; do
             echo "  --micro-osd         Specify path to micro-osd script"
             echo "  --wait-for=FILES    Wait for files before starting tests"
             echo "                      (colon separated, disables micro-osd)"
+            echo "  --mirror-state=PATH Path to track state of (rbd) mirroring"
             echo "  --results=PATH      Specify path to store test results"
             echo "  --ceph-conf=PATH    Specify path to ceph configuration"
             echo "  --mirror=PATH       Specify path to ceph conf of mirror"
@@ -143,6 +150,11 @@ test_failed() {
 }
 
 setup_mirroring() {
+    mstate="$(cat "${MIRROR_STATE}" 2>/dev/null || true)"
+    if [[ "$mstate" = functional ]]; then
+        echo "Mirroring already functional"
+        return 0
+    fi
     echo "Setting up mirroring..."
     local CONF_A=${CEPH_CONF}
     local CONF_B=${MIRROR_CONF}
@@ -155,6 +167,7 @@ setup_mirroring() {
     rbd -c $CONF_A mirror pool peer bootstrap create --site-name ceph_a rbd > token
     rbd -c $CONF_B mirror pool peer bootstrap import --site-name ceph_b rbd token
 
+    echo "enabled" > "${MIRROR_STATE}"
     rbd -c $CONF_A rm mirror_test 2>/dev/null || true
     rbd -c $CONF_B rm mirror_test 2>/dev/null || true
     (echo "Mirror Test"; dd if=/dev/zero bs=1 count=500K) | rbd -c $CONF_A import - mirror_test
@@ -170,6 +183,7 @@ setup_mirroring() {
     while ! rbd -c $CONF_B export mirror_test - 2>/dev/null | grep -q "Mirror Test" ; do
         sleep 1
     done
+    echo "functional" > "${MIRROR_STATE}"
     echo " mirroring functional!"
 }